There should be an easy way to obtain all JavaClasses that are involved in composing a generic type signature.

E.g.

class SomeClass {
  Map<? super String, ? extends Serializable> method() {..}
}

Then there should be some API to derive the set of classes [Map, String, Serializable] from method.getReturnType(). We already have some logic like this to calculate the dependencies of a class, since all these classes are also dependencies of the generic return type.

Open question: How should this method be named and where should it live? Should it be something like

JavaType.getRawTypesInvolvedInSignature()

? What would be a good name for this?